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Hydrothermal Synthesis of N-Doped Graphene for Supercapacitor Electrodes

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N-doped graphene based on graphene oxide and 3,3′,4,4′-tetraaminodiphenyl oxide (TADPO) was obtained using a one-step hydrothermal process. The resulting materials were fully characterized using elemental analysis, infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis, X-ray diffraction, scanning electron micrographs, and transmission electron microscopy. The findings reveal that benzimidazole rings were formed during the reaction, and the mass content of nitrogen in the obtained material varied from 12.3% to 14.7%, depending on the initial concentration of TADPO. Owing to the redox activity of benzimidazole rings, the new N-doped graphene materials demonstrated a high specific capacitance, reaching 340 F g−1 at 0.1 A g−1, which was significantly higher than that of the sample of reduced graphene oxide obtained under similar conditions without the use of TADPO (169 F g−1 at 0.1 A g−1). The resulting material also exhibited good cyclic stability after 5000 cycles.
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Keywords: Benzimidazoles; Graphene; Pseudocapacitance; Redox Activity; Supercapacitors

Document Type: Research Article

Affiliations: 1: Baikal Institute of Nature Management Siberian Branch of the Russian Academy of Sciences, Ulan-Ude 670047, Russian Federation 2: Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russian Federation

Publication date: May 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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